Add 70/4 and 20/5
1st number: 17 2/4, 2nd number: 4 0/5
70/4 + 20/5 is 43/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
70/4 = 70 × 5/4 × 5 = 350/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
20/5 = 20 × 4/5 × 4 = 80/20 - Add the two like fractions:
350/20 + 80/20 = 350 + 80/20 = 430/20 - 430/20 simplified gives 43/2
- So, 70/4 + 20/5 = 43/2
In mixed form: 211/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/4+40/5 70/8+20/5 70/4+20/10 70/4+60/5 70/12+20/5 70/4+20/15 70/20+20/5 70/4+20/25 70/28+20/5 70/4+20/35